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being only a little larger than your smartphone
Tangent Inst BBox Encoder Sys (and compatible)
Baffles have been added to increase contrast and AR coatings are optimized for the 656nm wavelength
The Daystar Quark filters perform the best with F/4 - F/9 refractors
Finely CNC machined aluminum body and focuser
Daystar Off Axis ERF 125mm with 460mm Cap - E-460F125 Drawtube Extension being only a little larger125mm ERF Glass & 460mm Cap Off Axis For SCT Daystar Energy Rejection Filters (ERF) reduce the heat load on your filter and optics assembly by absorbing reflecting UltraViolet and or Infrared light while transmitting light in the desired visual spectrum. These filters are sometimes Red or Yellow glass, or dielectric IR and UV, but pass light in the desired visual spectrum. The ERF can also serve as an aperture mask to accomplish a straight angle of